[OZAPRS] FT8 for HF APRS ?
lenniethelemming at gmail.com
Sat Dec 2 10:51:05 AEDT 2017
FT8, JT65 and similar are far too restrictive for something like HF APRS.
They are quite specifically designed for making short QSOs, not for passing
of arbitrary data (though is is possible, in a limited sense). Take a look
at the JT65 spec and you will see what I mean.
The concept of a MFSK-based mode with *good* FEC is still a good one
though, but you'd probably be better off either rolling your own or
starting from something like THOR or Olivia.
Would the AX25 packet format still need to stay? If you could drop that it
would give a lot more flexibility...
(Currently SW of Longreach...)
On 2 Dec. 2017 08:15, "Glen English VK1XX" <glenlist at pacificmedia.com.au>
> I have my own low bit rate HF capable position/ aprs reporting modem etc
> but I was thinking at FT8, given the widespread use, would make a good
> replacement for FSK300 (which is dumb arse poorly suited with no FEC on
> HF), and that the decoders allow for multiple simultaneous overlapping
> transmissions in the same BW.
> doing a port for dire wolf would be fairly straightforward.
> glen Vk1XX
> OZAPRS mailing list
> OZAPRS at aprs.net.au
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